70results about How to "Optimize processing parameters" patented technology

Essentially all of the processing parameters which control processing of a source audio signal to produce an encoded audio signal are stored in an audio processing profile. Multiple audio processing profiles are stored in a processing profile database such that specific combinations of processing parameters can be retrieved and used at a later time. Audio processing profiles are organized according to specific delivery bandwidths such that a sound engineer can quickly and efficiently encode audio signals for each of a number of distinct delivery media. Synchronized A/B switching during playback of various encoded audio signals allows the sound engineer to detect nuances in the sound characteristics of the various encoded audio signals.

The invention relates to a 9Cr18 stainless steel ball processing technique which can be raised to G3 grade. The processing technique sequentially includes raw material inspection, ball-forging, stress-relief and anneal, hot-acid pickling, polishing, quenching plus cold treatment plus backfire, hard milling, a first-time stabilizing treatment, fine milling, a second-time stabilizing treatment, fine grinding, washing, fine appearance-forming and lubricating and packing. On a basis of making a full use of the existing steel ball processing technology, machine-tool equipments and testing equipments, the technique of the invention adopts a reinforced steel ball manufacturing equipment, industrial preparations, and a novel abrasive to optimize various machining process parameters in the steel ball processing technique and to strengthen a process quality testing and has a proper washing, packing and conserving proposals, etc. process technology. The invention can raise the precision grade of the stainless steel ball to G3 grade and solves the processing technology, testing control and finished-product washing of the 9Cr18 stainless steel ball, and then a batch manufacture is realized finally.

The invention provides a milling cutter eccentricity rapidly measured non-contact type laser measuring method. The milling cutter eccentricity rapidly measured non-contact type laser measuring method can rapidly obtain the actual cutter eccentricity after a milling cutter is installed, accordingly whether the installation is reasonable or not is judged and efficient machining parameter is confirmed and part accurately and efficiently machining is achieved. The milling cutter eccentricity rapidly measured non-contact type laser measuring method is characterized in that dynamic displacement of the milling cutter during rotation at different rotating speed is collected through a laser displacement sensor; the peak-peak value of the dynamic displacement under different rotating speed through filtering waves are obtained; a mathematical model for solving the milling cutter eccentricity is constructed according to the peak-peak value; the actual milling cutter eccentricity is obtained due to solving of an optimizing model of the milling cutter eccentricity.

The invention relates to the technical field of machining, in particular to a processing method of a titanium alloy TA15 thin-wall long boss. The processing method particularly comprises the followingsteps: removing the margin of a middle arm, removing the margin of the right side of the boss, removing the margin of the left side of the boss, finish-milling the middle arc, finish-milling the right side of the boss and finish-milling the left side of the boss. The processing method is mainly applied to milling of an axial long boss of the new generation aero-engine titanium alloy TA15 material, the adverse effects of machining deformation of thin part structure wall and long axial size in the processing process of thin-wall guide pipe parts are avoided, the technical bottlenecks of programming of milling processing numerical control program and determination of milling processing process parameters are overcome, and the shape and the size precision requirements of the titanium alloy TA15 material thin-wall long boss parts are guaranteed effectively.

In the laser metal surface enhancing processor, each of the two driving shafts is driven by a stepped motor and the computerized control system sends out motor stepping pulse via the control card according to the reinforced locus requirement to complete the motion control in two directions. The operation is performed via screen control to replace large amount of buttons and switches resulting in simple control circuit and operation panel and friendly operation interface. The control program is one under Windows98 environment and has user accessed machining locus parameters and partial machinetool structure parameters, and all these makes the system is programming-free and reconfigurable. In addition, the operation interface is programmable and the system is opened.

The invention provides a processing method for large breadth thin stone boards and super-thin boards, which comprises the following steps of: (1) splicing and combining a stone board and a base body to form a single-side compound stone base-body composite board; (2) halving and processing the single-side compound stone base-body composite board formed in the step (1) into a simple thin stone board and a composite stone board formed by compounding with the base body and the super-thin stone board; and (3) and decomposing binders through heating the composite stone board formed by compounding with the base body and the super-thin stone board processed in the step (2), and dividing the base body and the super-thin stone board into a base body and a super-thin stone board. The invention improves the bending strength of the super-thin board. Boards are not easy to break in the process of halving and processing. Compared with a general halving method for super-thin boards, the processing method can bear larger axial force. Therefore, the processing method improves the strength and the yield of boards, can realize optimal processing parameters, and can improve the processing efficiency.

The ultrasonic-assisted glass heat-bending device based a millimeter-wave heat source and a control method. The ultrasonic-assisted glass heat-bending device comprises a machine frame; a feeding area and a discharging area are respectively arranged on two sides of the machine frame; a furnace cavity is formed on the machine frame; a control box is arranged at one side of the machine frame; a graphite mould and a variable-frequency millimeter-wave heat source connected with the control box are arranged in the furnace cavity, wherein the frequency of the variable-frequency millimeter-wave heat source ranges from 2.5 GHz to 20 GHz, and the power is of kilowatt magnitude; a cavity is formed in the graphite mould; a preheating area, a hot bending pressurizing area, a pressure maintaining area and a cooling area are arranged on the furnace chamber; a shifting fork executing mechanism used for shifting the graphite mold is arranged on the machine frame; and the preheating area, the hot bending pressurization area, the pressure maintaining area, the cooling area and the shifting fork execution mechanism are separately connected with the control box. According to the invention, the mold is heated more uniformly, the molding rate and material surface quality are remarkably improved by assistance of ultrasonic vibration, and parameters such as temperatures, pressure and the like are controlled cooperatively in different areas, so that requirements for manufacturing 3D ultra-thin glass with high surface quality are met.

The invention discloses a high-oil barley granule compound feed with low pulverulent ratio for pig and a preparation method thereof. The compound feed contains 30-47% of corn, 15-35% of soybean meal, 10-20% of barley, 6-8% of extruded soybean, soybean oil, high efficiency, L-Lysine, L-threonine, carnitine, a composite enzyme preparation, fungicide, and 4% of piglet late stage compound premix. The preparation method comprises: three mixing, crushing by classification, steam modulation, granulation, cooling and packaging; and the particle pulverization rate of feed is no more than 10%. The invention uses barley, soybean meal, extruded soybean, soybean oil and high efficiency as the main ingredients, which are supplemented with the auxiliary agent such as composite enzyme, so as to prepare the feed with balanced nutrition; at the same time, through the improvement of process parameters, the problems of increased particle pulverization rate, and weak anti-damage ability of feed in the transport process and automatic feeding line usage caused by large dose of barley and oil raw materials are overcome, so as to improve the utilization rate of feed.

The invention discloses a thermal-mechanical coupling model-based workpiece surface residual stress control and adjustment method. The method includes the following steps that: a, a cutting test is performed, surface residual stress sigmai correspondingly obtained under each group of cutting parameters is measured, wherein the cutting parameters include cutting depths ap, cutting speeds V and feedquantities f; b, an orthogonal cutting force prediction model is constructed based on an Oxley prediction model and a J-C constitutive model; c, a workpiece temperature prediction model is constructed based on thermal stress formed by means of the superposition of the temperature of a shearing zone and a ploughing and cutting zone; d, a thermal-mechanical coupling-based workpiece surface residualstress empirical model is constructed based on the orthogonal cutting force prediction model and the workpiece temperature prediction model, and an expectation function is selected to describe the influence of each parameter; and e, the sum of the absolute values of the difference values of observed surface residual stress sigmai and predicted residual stress sigmasurface is adopted as a fitnessfunction, and a genetic algorithm is used to perform optimization, so that a proportional coefficient and an exponential coefficient can be obtained. The method of the invention has the advantages ofshort calculation time and convenient use.

The invention discloses a hobbing process parameter optimization method based on a hobbing cutter spindle vibration response model, which comprises the following steps of: analyzing the stress of a hobbing cutter spindle from the perspective of infinitesimal elements on the basis of the Euler beam theory and the mechanical bending deformation of materials, and establishing a hobbing cutter spindleacting force balance equation and a moment balance equation; obtaining a multivariate mathematical function relational expression of inherent frequency of each order of a hob main shaft and hob mainshaft vibration relative to each machining process parameter through solving, classifying hobbing process parameters, determining gear machining process parameters and hob main shaft process parameters, and finally optimizing the machining process process process parameters. According to the method, a mathematical function relational expression between the vibration quantity of the hob main shaftand each machining process parameter is established based on a vibration mechanism. The influence degree of the machining process parameters on hobbing is analyzed, the optimal machining process parameters are obtained, or the machining process parameter value range meeting the hobbing cutter main shaft precision requirement of the hobbing machine is obtained, and therefore the hobbing vibration amount is reduced, and the machining efficiency is improved.

The invention discloses a multi-target rice mill unit scheduling optimization system based on ACO-BP. A 4*4 rice milling unit control system is designed, multi-target processing can be achieved among units through scheduling optimization, processing parameters of each rice milling are optimized, a rice breaking rate of a rice mill can be reduced, and processing efficiency of the units can be improved. The unit control system optimizes an internal utilization algorithm of the units, can regulate and control the processing parameters of each rice milling according to a single processing target, realizes an online whitening precision intelligent control of the units and reduces a operation cost of the rice mill. The rice milling unit control system is built in a manner of optimizing a BP neural network by using an ant colony optimization algorithm (ACO), the ant colony optimization algorithm can accelerate a learning rate of a neural network, convergence to optimal parameters is faster, and a neural network model for optimally regulating and controlling the rice milling units is built. A built rice milling unit database can perform iterative optimization on processing parameters and processing schemes through evaluation of products and learning ability of the neural network, and self-learning of the database is realized.

The invention belongs to the technical field of aircraft component assembly, and particularly relates to a method for judging the machinability of an aircraft component compensation layer, which comprises the following steps of: obtaining a rule between a cutting load and a cutting parameter through a cutting test, and determining a limit cutting parameter; combining the structural characteristics of the section, partitioning the processing surface of the compensation layer, and calculating to obtain the deformation of all relative stiffness minimum points on the section and the minimum structural stiffness; designing a box section test piece according to requirements, performing partitioning according to box section structural characteristics, and obtaining deformation of all relative rigidity minimum points on a box section and the minimum structural rigidity through calculation; and determining critical machining deformation, and judging the machinability of the section compensation layer on the basis of the critical machining deformation in combination with rules among the parameters, so that optimization of the cutting parameters of all the partitions is achieved. According to the method, a process calculation and analysis method is provided for machinability judgment of the section compensation layer liner, the problems of machining vibration and debonding in the machining process can be predicted, and parts which cannot be machined can be accurately positioned.

The invention belongs to the technical field of precision measurement and analysis, and particularly relates to a method for solving the stress of a thin substrate, which comprises the following steps of: S1, acquiring basic parameters of the thin substrate of which the stress is to be analyzed; S2, establishing a finite element model of the thin substrate; S3, applying a unit stress load to each surface in the model in sequence, solving the finite element model, and outputting a solving result; S4, obtaining the center point coordinates of the surfaces to which the unit stress load is applied in the finite element model, and further constructing a matrix L including the center point distance relationship between the surfaces; S5, acquiring the surface shape of the real thin substrate, and drawing an accept-reject curve; and S6, solving the linear equation by adopting a regularization method, and calculating to obtain the real stress distribution of the thin substrate. The problems of discontinuous stress distribution and large fluctuation of the thin substrate caused by directly solving the equation set are solved, and extra physical damage is not introduced in the process of obtaining the stress distribution.

The invention discloses a tobacco shred structure determining method and device suitable for thin cigarettes. The tobacco shred structure determining method comprises the following steps: tobacco shreds of different lengths are subjected to mixing combination through a mixing uniform design method, and a plurality of tobacco shred structures are obtained; the physical index and the smoke index ofeach cigarette made of the corresponding tobacco shred structure are detected, and variable coefficients of all the indexes are calculated; all tobacco shred component proportions in the tobacco shredstructures are subjected to quadratic polynomial stepwise regression analysis, regression function models of all tobacco shred components and the variable coefficients of all the indexes are established, the regression function models are optimized, and tobacco shred length intervals and the variable coefficients corresponding to all the optimal indexes are obtained; the variable coefficients ofall the indexes are compared through combination of the Delphi method and an adjacent index comparison method to determine weights of all the indexes; and the weights of all the indexes and the variable coefficients of all the indexes are subjected to weighted average calculation, all the tobacco shred component proportions corresponding to the minimum variable coefficients of all the indexes areobtained, and the optimal tobacco shred structure is determined.

A method predicting deformation quantity produced during aluminum alloy thin wall member machine processing, relates to the technical field of prediction for deformation quantity during aluminum alloy thin wall member machine processing and belongs to the field of machinery processing. A problem of large simulation calculation amount during the whole machine processing for the aluminum thin wall component in the prior art can be solved. Billet residual stress and surface layer residual stress of the aluminum alloy thin wall component machine can be measured; distribution of equivalent surface layer residual stress replaces distribution of the surface layer residual stress; the billet residual stress is input to an ABAQUS finite element software; parts to be removed during the processing are removed; the equivalent surface layer residual stress is applied to the ABAQUS analysis model; and the deformation quantity of the aluminum alloy thin wall component due to the co-action of the release of the billet residual stress and machine processing surface layer residual stress is calculated, so deformation quantity produced during aluminum alloy thin wall member machine processing can be predicated. The method can be applied to prediction for deformation quantity produced during aluminum alloy thin wall member machine processing.

Process for machining in situ the peripheral surface (1100) of a rotating part, rotating around an xx′ axis (1), wherein a machining device is used comprising at least one plate (12) fixed to a frame and a tool holder (11) provided with a cutting tool (300), and mounted on the said plate such that it can move along a YY′ direction (3) substantially perpendicular to the xx′ axis of rotation (1). The tool holder is installed on the plate (12) such that it can pivot around an axis oriented along a ZZ′ direction (4) substantially perpendicular to the YY′ direction and to the xx′ axis of rotation. By combining a rotation of the tool holder around the XX′ axis and a translation of the centre (C) of rotation around the ZZ′ axis along the in-feed direction YY′, a displacement is imposed on the active end of the cutting tool (300) in a plane perpendicular to the ZZ′ axis. The device may also move along the third XX′ axis.

The invention provides a molding process of a five-meter scalloped segment of a carrier rocket. A previous secondary stretch forming process is changed, the stretch forming rate is increased, and thequick primary stretching forming process is adopted. The molding process comprises the steps of blanking; quenching heat treatment; stretch forming; allowance removal and finishing; artificial aging;chemical milling; machining; surface treatment; and packaging and delivery. The stretch forming process specifically comprises the steps of pre-judging various types of stretch forming trajectories and stress and wall thickness distribution change under the stretch forming rate in advance through analog simulation, and carrying out discretization treatment on transverse and longitudinal displacement through the transverse and longitudinal small-displacement progressive stretch forming trajectories to make the transverse and longitudinal displacement uniformly distributed in the whole stretch forming process. According to the molding process, the quick one-time stretch forming technology is adopted, and machining parameters are optimized; on the premise of ensuring the machining precision and surface quality of the five-meter scalloped segment, the production efficiency of products is improved to the maximum extent, the forming time of the products is shortened from 3.5 h to 1.5 h, andthe production cost is reduced.